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  • NIOSH
    RI 4481 Diamond Drilling In The Metaline District Pend Oreille County, Wash.

    By N. L. Wimmler

    The Metaline mining district was examined in 1942 by Bureau of Mines engineers with the cooperation of geologists of the Federal Geological Survey. Because the demands of war production were rapidly

    Jan 1, 1949

  • AIME
    Probierbüchlein - Title Page

    A Little Book on the Assaying of Gold, Silver, Copper, and Lead. Also on How to Assay and Work profitably All Minds of Metal. Complied with great care for the benefit of all mintmasters, assay

    Jan 1, 1949

  • NIOSH
    RI 4397 Investigation Of Chestatee Copper And Pyrite Deposit Lumpkin County, Ga.

    By M. H. Kline

    The Chestatee mine is one of several well known pyrite deposits in Georgia that are reputed to carry appreciable quantities of copper with the ore. The deposit is? in Lumpkin County on the Chestatee R

    Jan 1, 1949

  • CIM
    Pitchblende Occurrences of the Goldfields Area, Saskatchewan

    By A. M. Christie

    Acknowledgements The following account has been compiled mainly from records and maps of Eldorado Mining and Refining (1944), Limited, hereinafter called the Crown Company. This work was done under

    Jan 1, 1949

  • AIME
    Technical Papers and Discussions - Transformation of Austenite - Anisothermal Formation of Rainite and Proeutectoid Constituents in Steels (Metals Tech., December 1947, T.P. 2290) (with discussion

    By Leonard D. Jaffe

    In recent years, the advantages of tempered martensite as a microstructure for steel parts have been well established. For parts that must not fracture brittlely when loaded at high rates, at low temp

    Jan 1, 1949

  • AIME
    Reservoir Engineering - The Effect of Well Spacing and Drawdown on Recovery from Internal Gas Drive Reservoirs

    By John C. Calhoun, Raymond G. Loper

    Theoretical calculations for the decline of pressure and the variation of instantaneous producing gas-oil ratio with increased cumulative production have been made for reservoir systems under various

    Jan 1, 1949

  • AIME
    Papers - Theory and Interpretation - Factors in the Localization of Mineralized Districts (Mining Tech., Jan. 1945, T.P. 1762, with discussion)

    By Carlton D. Hulin

    The usual concurrence in time and space of intrusive igneous activity, favorable structural disturbance and mineralization, which is so manifest in the mineralized district necessarily indicates a clo

    Jan 1, 1949

  • AIME
    Barodynamics (Ground Support) - Determination of Room and Pillar Dimensions for the Oil-shale Mine at Rifle, Colorado (Mining Tech., Nov 1948, TP 2489)

    By Phillip B. Bucky, Fred D. Wright

    The present known petroleum reserves are limited, and unless important new fields are discovered the Nation will be dependent, in the not too distant future, upon imports or upon synthetic liquid fuel

    Jan 1, 1949

  • AUSIMM
    Some Notes on the Equipment of the Electrolytic Zinc Company of Australasia Limited, at Rosebery, Tasmania

    The purpose of this paper is to list by tabulation and flow sheet, the operating equipment and installations in use at Rosebery, and to refer to particular items which may be of interest for purposes

    Jan 1, 1949

  • AIME
    Technical Papers - Geophysics - Geophysical Investigations for Selection of Sale for Ramapadasagar Dam across the Godavari River in Madras, South India (Mining Tech., Nov. 1947, TP 2287, with discussion)

    By M. B. Ramachandra Roa

    This paper records the results of the earth resistivity surveys made in the Godavari River in connection with the Ramapadasagar project. After describing the topographical and geological features of t

    Jan 1, 1949

  • CIM
    Nor-Acme Mine

    By Nelson Hogg

    "THE NOR-ACME gold mine is located close to the north shore of Snow Lake, at 54°53' north latitude and 100°03' west longitude. It is about 75 air miles east of Flin Flon, and 36 miles by road from Wek

    Jan 1, 1949

  • NIOSH
    RI 4612 Chloride Volatilization And Other Tests On A Gold-Copper Ore

    By A. L. Engel

    The sample of ore on which the work described in this paper was done came from Mina Oriente, Carrizal Bajo, Provincia de Atacama, Chile, South America, and was sent at the request of the Chil.ean Gove

    Jan 1, 1949

  • AIME
    Technical Papers and Discussions - Properties of Steel - Notch-tensile Characteristics of a Partially Austempered, Low Allay Steel (Metals Tech., February 1948, T.P. 2321)

    By G. Sachs, L. J. Ebert, W. F. Brown

    Isothermal transformation, or "aus-tempering," of a carbon-containing aus-tenite at elevated temperatures yields so-called "intermediate products." Their structure and properties are, for a given hard

    Jan 1, 1949

  • AIME
    Technical Papers and Discussions - Transformation of Austenite - An Evaluation of Quenching Oils by Means of the End Quench Test (Metals Tech., April 1948, T.P. 2353) (with discussion)

    By G. Sandoz, C. A. Siebert

    Oil quenching of steel, in good commercial practice, is carried out using a great deal of agitation in the quenching bath. Many of the tests reported in the literature represent the results obtained o

    Jan 1, 1949

  • AIME
    Iron and Steel - Influence of Size and the Stress System on the Flow Stress and Fracture Stress of Metals (Metals Tech., June 1948, TP 2373)

    By D. J. McAdam, G. W. Geil, D. H. Woodard, W. D. Jenkins

    .In a series of papers, the authors and their associates have shown that the resistance of a metal to fracture is a function of all three principal stresses. Consequently since a technical cohesion li

    Jan 1, 1949

  • AIME
  • AIME
    Technical Note - The Structure at a Cleavage Surface in Ferrite (Metals Tech., Dec. 1948, TN 8)

    By F. C. Wagner, E. P. Klier, D. E. Nulk

    The presence or absence of plastic strain at a cleavarage surface is a question of much importance, and upon its answer depends future possible theoretical work. To investigate this

    Jan 1, 1949

  • AUSIMM
    Geology of Ruddygore Copper Mine, Chillagoe

    IntroductionHistory of MineTopographyGeology of AreaGeneral DescriptionIgneous Rock TypesGranodioriteQuartz monzoniteApliteGranite porphyryMetasomatic ActionAlteration of monzonite/Alteration of aplit

    Jan 1, 1949

  • AIME
    Copper and Copper Alloys - Effect of Grain Size on Tensile Strength, Elongation, and Endurance Limit of Deep Drawing Brass (Metals Tech., Sept. 1948, TP 2478)

    By J. W. Craig, H. L. Walker

    Industry has for many years recognized the dependence of certain mechanical and physical properties. as well as workability, upon grain size variations in brass. Although the dependence of properties

    Jan 1, 1949

  • CIM
    Inconvertibility of Currency vs The Gold Standard

    By Balmer Neilly

    To one with so little experience in matters pertaining to currency, international finance, and foreign trade, this is surely an ambitions venture on my part. However, this is a subject of prime import

    Jan 1, 1949